43401340211 has 4 divisors (see below), whose sum is σ = 43995879192. Its totient is φ = 42806801232.

The previous prime is 43401340181. The next prime is 43401340217. The reversal of 43401340211 is 11204310434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11204310434 = 2 ⋅5602155217.

It is a cyclic number.

It is not a de Polignac number, because 43401340211 - 2³⁴ = 26221471027 is a prime.

It is a super-2 number, since 2×43401340211² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43401340217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297269381 + ... + 297269526.

It is an arithmetic number, because the mean of its divisors is an integer number (10998969798).

Almost surely, 2^43401340211 is an apocalyptic number.

43401340211 is a deficient number, since it is larger than the sum of its proper divisors (594538981).

43401340211 is an equidigital number, since it uses as much as digits as its factorization.

43401340211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594538980.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 43401340211 its reverse (11204310434), we get a palindrome (54605650645).

The spelling of 43401340211 in words is "forty-three billion, four hundred one million, three hundred forty thousand, two hundred eleven".